error line numbers is skewed

[zwetan]

Because as3shebang wrap the main executing script into a custom wrapper
to allow nice colors and stuff

if an error occurs, the line number is skewed

[zwetan]

example:

#!/usr/bin/env as3shebang -el -ec

import shell.*;
import C.macros.*;

trace( "local script" );

trace( "args = " + Program.argv );
trace( "file = " + __FILE__ );
trace( "line = " + __LINE__ );
trace( UNKNOWN );
//throw new Error( "hello world" );

trace( "EOF" );

trace( UNKNOWN ); is on line 11

but the error stack trace shows

ReferenceError: Error #1065: Variable UNKNOWN is not defined.
	at global$init()[:20]
	at shell::Runtime$/eval()
	at corsaair.tools.as3shebang::App/main()
	at global$init()

that's because the wrapper scripts add 9 lines at the top

[zwetan]

ok problem fixed by saving the wrapper scripts line numbers
in the global var _global.as3sh_err_line_diff

and then scanning the error stack trace line number
subtracting this number

[zwetan]

well ... the problem occurs again when the stack trace contains multiple line numbers

with this script

#!/usr/bin/env as3shebang -el -ec

import shell.*;
import C.macros.*;

function something()
{
    return UNKNOWN;
}

trace( "local script" );

trace( "args = " + Program.argv );
trace( "file = " + __FILE__ );
trace( "line = " + __LINE__ );
trace( something() );
//throw new Error( "hello world" );

trace( "EOF" );

return UNKNOWN; is on line 8
but the function call generating the error
trace( something() ); is on line 16

see

the first error number in the stack trace is correct

at Function/anonymous()[:8] for return UNKNOWN;

but the second line is incorrect
at global$init()[:25] for trace( something() );

should be at global$init()[:16]